Petee wilkes



(No Model.)

P. WILKES.

GOLLAPSIBLE GORE BARREL.

Patented Nov. 17, 1885.

INVE/VTOH By L4 Afforne'y N. PETERS/Photo-Lnlwgrnpher, Wzmmklon, D. c

' ATENT Eric.

PETER WILKES, OF TRENTON, NEW JERSEY.

COLLAPSIBLE CORE-=BARREL.

SPECIFICATION forming part of Letters Patent No. 330,657, dated November 1'7, 1885,

Application filed June 9, 1885. Serial No. 168,116.

To all whom, it may concern:

Be it known that I, PETER -WiLKEs, a citizen of the United States, residing at Trenton, New Jersey, have invented new and useful Improvements in Collapsible OOreBarreIS, of which the following is a specification.

My invention relates to certain new and useful improvements in collapsible core-barrels.

The object of-the invention is to produce a corebarrel which is simple in construction, cheap in cost, and one which may be readily removed from the sand which has been packed around the same for the purpose of covering the core-barrel.

With this purpose in View my invention consists of a core-barrel made in the usual cylindrical form and composed of sections, all of which are movable toward and from a common center, the said sections being so constructed and arranged that each alternate section will begin to advance inward when motion in that direction is imparted before the remaining section advances, in order that these latter may overlap the former, and in that way allow the device to occupy a minimum amount of space.

The invention further consists of various improved and novel details of construction whereby the operation of the device is accomplished and the objects of the invention attained.

In order that the advantages of the device and its construction and operation may be clearly understood and appreciated, and others skilled in the art enabled to make and use the position of the parts being the same as in Fig. 1. Fig. 3 is a similar View, the parts being shown as drawn in, in order that the barrel may be removed from the mold. Fig. 4 is a side elevation taken at rightangles to that shown in Fig. 1.

In these drawings, A represents the base or (No model.)

flask, which is of the ordinary construction, and adapted to form a base and support for the core barrel and mold which is made around the same. This base is provided at its center with an opening for the reception of a bar or rod, B, around which the core-barrel is formed, and this bar or rod is secured to the base or flask by passing a tapering pin through an opening in the bottom of the rod, which pin, being driveninto place, draws the barrel down against the flask and retains it rigidly in that position.

B represents the turn-shaft, having an eye in its upper end by which the barrel is drawn out, and the lower end is provided with an opening for the reception of the pin before mentioned.

0 (3 represent two winged hubs, which are secured in proper position to the rod B in such a manner as to be moved therewith. To each of the wings O is f bolted a radial plate, D, which is of a length :about equal to that of the mold to be formed.

The outer surface of the barrel is formed of a series of sections, E E and F F, all of which sections are provided with brackets G, in which are confined the radial plates, and these plates are provided, at points hear these brackets, with slots 9, in which slide bolts h,which pass through the arms of the said brackets, and the length of these slots is equal to the movement which it is necessary for the plates to accomplish in the operation of the device. The slots 9 in these plates incline outward from bottom to top, so that as the rod B, winged hubs O O, and consequently the plates D, are

moved upward, the sections which are connected to these plates by means of the slots and pins or bolts moving therein are moved inward.

It will be seen that the sections F F are much narrower than the sections E E, and also that the said sections E E are provided with notches or indentations on their faces adjacent to the sections F F, into which indentations the plates last mentioned may enter.

In order that the movement of the respective sections of the mutilated cylinder may be such as to cause the sectionsF F to first move inward to occupy the indentations in the sections E when power is applied to collapse the cylinder, and then the whole number of sections be drawn in, I employ the means now to be described.

From the drawings it will be observed that the slots in the plates which are connected to the sections F F are inclined from top to bottom; and it will also be observed that the slots in the plates which are connected with the sections E E are straight from the bottom a short distance upward,and then inclined in an outward direction. The effect of this arrange ment is to cause the'seetions F F to begin to move inward as soon as power is applied upon the rod B,and this movement is continued, independent ofthe sections E E, until the firstmentioncd sections are moved in opposite the indentations ofthelatter sections. \Vhen this movement s acconqolished, the pins which are connected to the brackets on the sections E E and slide in the plates which connect these sections to the hub have reached the end of the straight portion of the slot in the said plates,and consequently further upward movement of the rod B will move the sections inward simultaneously.

In the operation of the device the shaft is passed through a hole in the flask and secured in the manner described, and the sections of the mutilated cylinder forced out into the position shown in Fig. 2. When this has been done, the barrel is coated with loam and then set in the mold-cavity, and the molten iron poured in and allowed to cool sufficiently to prevent bleeding After this has been done, the pin which holds the rod b to the flask is withdrawn and the barrel is drawn out by lncans of the rod, and by doing this the sections are moved inward and leave the mold free from strain and capable of being compressed by the metal in cooling.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A collapsible core-barrel consisting of the mutilated cylinder composed of the larger sections, E, and the smaller sections,F, the said sections being connected to a common operating-rod by means of slotted plates and pins entering the same, the said slots operating to move the smaller section inward first, and then to move the whole number of sections inward simultaneously.

2. A collapsible core-barrel consisting of the mutilated cylinder made up of the sections of different widths, the central operating-rod,and the slotted plates entered by pins upon the sections, the slots in the plates which operate the shorter sections being inclined throughout their entire length from top to bottom, and those in the plates operating the larger section being straight a short distance from the bottom and then inclined inward, substantially as described.

3. A collapsible core-barrel consisting of the mutilated cylinder made up of the sections of different widths, the wider sections being provided upon their faces which are adjacent to the narrower sections with notches or indentations, the operating-rod, and slotted plates, theslots in the plates which operate the shorter sections being inclined throughout their entire length from top to bottom, and those in the plates operating the large sections being straight a short distance from the bottom and then inclined upward, whereby when the operating-rod is raised the narrower sections are first drawn in to occupy the indentations in the wider sections, and then the whole num ber of sections moved inward simultaneously.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

PETER WILKES.

Witnesses:

\VM. D. VVOODRUFF, E. H. SWEENEY. 

